Radiator



C. A. DRAGORITS.

RADIATOR.

APPLICATION FILED SEPT. 22. 1920.

Patented Oct. 18, 1921.

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.h nu ill. WIJ/W UNITED STATES CHARLES A. DRAGORITS, OF CINCINNATI, OHIO.

RADIATOR. i

Application filed September 22, 1920.

To all whom t may concern.'

Be it known that I, CHARLES A. DRAGO- mrs, a citizen of the United States, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful improvements in Radiators, of which the following is a full, clear, and exact description, reference being had to the drawings, forming part of this specification.

My invention relates to radiators for the purpose of cooling liquids, same being designed chiefly for use in motor vehicles for cooling` of the water employed in the engine jacket.

There are a multitude of various forms of radiatoi` on the market of the honeycomb type, viz forrned of corrugated strips of metal folded against each other to form transverse air passages, and the strips or folds set together in a staggered relation, so as to form water passages lengthwise of the pairs.

The chief object of my invention is to strengthen and vit-alize this type of radiator core known as the honey-comb, and to provide for an adequate resistance to freezing and heat expansion such that a substantially leak-proof radiator be provided so far as freezingisv concerned.

In fact according to tests run by competent eng'ineers it has been demonstrated that the radiator made in accordance with my invention will stand the following' test without leakage, vizz-freczing to 100 F. and thawing in boilingwater for six consecutive times, and then freezing to ten below zero for l2 hours after which another thawing in boilingwater is made.

ny design because of small and large corrugations and a spring-like tendency thereby developed, together with freedom for eX- pansion, brings about the quality of being proof to the above test. y

I accomplish the various objects of my invention by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

In the drawings,

Figure l is a perspective detail of a portion of a radiator core made according to my invention, same being` partly broken away.

Fig. 2 is a transverse or horizontal section through the core.

I have not deemed it necessary to show Specification of Letters Patent.

Patented Oct. 18, 1921.

Serial No. 411,947.

upper and lower tank, and hose connection,y y

or with similar devices in the various uses to which radiators are put.

TheV essential feature of my invention is the core, and as stated it is of the honeycomb type.

The core is made up of corrugated strips of metal formed into units, with the edges of the strips enlarged so as to form abuttingY ends when the units are set together.

Thus each unit comprises a strip of metal l bent into a large corrugation 2, at the conter of which is a smaller reverse corrugation 3, the corrugations being; considered in each instance as three sided forms, with two slopingl side walls and acrest. In the instance of the corrugation 2, the crest is not fiat but has the reverse corrugation tieren; in the case of the corrugation 3, the crest is fiat.

Intermediate each large corrugation 2, is a small corrugation e which is alike to the reverse corrugation 3 except that it is not reverse. The ends of each corrugation are expanded as at 5, as is familiar in the honeycomb radiator core art.

The corrugated strips so formed up are bent crosswise and the end brought face to face to form longitudinal units for the core. The bend is so made, (as at 6) so that the wide corrugations and corrugations 4 face each other, and extend away from each other and the reverse corrugations '3 extend toward each other.

The seamed ends of the pieces have their walls formed up slightly prior to soldering forming an enlargement as shown at 7, so that each unit has one beaded end and one fiat end of greater height than a normal corrugation. This results in a close fit at the top and bottom of the core.

The units are assembled in staggered relation so that the corrugations t of each unit lie adjacent the corrugations 3 of the units abutting it, the walls of the abutting units beingl spaced apart in the body of the core by the enlarged ends, but fitting each other at the ends. The reason of the fit at the ends is the similarity of the corrugations i and the corrugations 3, asis apparent 1n the non-broken away portion of Figl- As is familiar, the core made up of the v themselves when assembled.

desired units is dipped in solder to firmly unite the abutting ends, leaving transverse air spaces formed by the corrugations in the units and longitudinal water passages formed between the spaced walls of the units The angles between the corrugations are all rounded as at 8 thereby adding to the springy tendency of the core and strengthening` the corners. It will also be observed that the core when completed has alternate wide and narrow air openings for the units, same being in staggered relation as to the core as a whole.

It can be observed that by my construction now described I have produced a core in which there are alternate large and small air passages and that considering any one lin use as in a motor vehicle.

The excess number of folds per unit provides for a longer path of water lengthwise of the core, than in the constructions with which I am familiar, with air in contact with the walls of the water passages at every point.

lVhen frozen the tendency to break is overcome by the spring-like construction which causes the core to revert back to its original form after freezing and expansion, thereby preventing the opening from being enlarged after intermittent freezing and therefore obviates the breaks, while in an ordinary radiator the corrugations gradually are expanded until the metal reaches its breaking point,A

thereby causing leakage through the metal itself or the soldered ends thereof.

I do not desire to limit myself in the scope or nature of my invention because of the theory advanced as to its proof against Ordinary expansion and contraction leakage since the structure accomplished the result, whatever may be the reason therefor, and I am advancing those occurring to me and the expert engineers who have observed the tests thereof.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is i l. In a radiator core of the honey-comb type, a series of units set in staggered relation with relation to the corrugations therein, with the walls of the units spaced'apart internally of the radiator to permit longitudinal passage of water therebetween, said corrugations being formed vessentially of large corrugations interspaced by small corrugations, with the crests of the large corrugations formed into small corrugations shaped alike to the alternate small corrugations.

2. In a radiator core of the honey-comb type, a series of units comprising essentially a double corrugated structure having outward and inward wide corrugations, with the corrugations formed at the inner and outer crests having small corrugations in an opposite direction, whereby the expansion of the small corrugations is taken care of by a'springiness in the walls of the large corrugations.

3. In a radiator core, a unit comprising essentially a sheet metal corrugated and formed into a double walled structure, with a series of corrugations in the metal having walls formed as follows, viz z-a wide wall of a large corrngation, an angularly direct-ed narrow wall of a small corrugation in the opposite direction, a flat crest wall, the remaining wall 0f the small corrugation in a reverse direction to the first wall thereof, a reverse wall for the large corrugation, an-

other reverse wall for a small corrugation, a

CHARLES A. nnasoarrs. 

